Even if I kill all enemies, I still see "Hostiles: 2" and nothing happens until my reactor is depleted.

Omg, ok, there were two asteroids or something, barely noticeable

I've had one other playtester have a similar experience, I guess after hundreds of hours of testing myself it didn't even register as an issue.  I think the solution is going to be to not count asteroids as 'hostiles'. Alternatively, I can try to make them more obvious to see?  I'll work on getting it updated soon.  Thank you for your feedback!

Asteroids are now just extra opportunity for scrap and environmental hazard rather than being tied to wave progression. Thank you for your report!